How can energy change
Download
1 / 6

How can energy change? - PowerPoint PPT Presentation


  • 56 Views
  • Uploaded on

How can energy change?. Chapter 5, Lesson 2 Pgs. 158-163. Lesson Objective I will know how energy changes form. I will know how electricity changes to light and gives off heat. Vocabulary Words: filament - a thin-coiled resistor that transforms electrical energy into heat and light energy.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' How can energy change?' - lainey


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
How can energy change

How can energy change?

Chapter 5, Lesson 2

Pgs. 158-163


Lesson Objective

I will know how energy changes form. I will know how electricity changes to light and gives off heat.

Vocabulary Words:

filament- a thin-coiled resistor that transforms electrical energy into heat and light energy.

friction- a force that acts when two surfaces rub together.

resistor- an object that uses energy in a circuit.


  • Energy Changing Form

  • There are many forms of energy-- electricity, light, sound, and energy of motion.

  • Energy is never lost. It cannot be made or destroyed.

  • Energy can transform, or change form.

  • Electricity can change to light. Motion can change to sound. Wind can change to electricity.

  • A lamp transforms electrical energy to light.

  • If you pluck a guitar string, the energy of motion transforms to sound energy.


Light from Electricity

Televisions, computers, and light bulbs all use electricity. These objects are resistors that use the energy in a circuit. Most resistors transform electrical energy to heat and light.

The filament inside a light bulb becomes so hot it glows, also giving off light.


Heat from Electricity

When electrical current passes through a resistor, it often gives off heat. This change is why electrical wires sometimes become hot.

The resistors of some appliances get so hot that they produce a red glow. This glow happens in toasters.


Lesson Summary

Electrical, light, and energy of motion are some forms of energy.

The energy of motion can cause friction and give off heat.

Electrical energy can change to light energy and give off heat.


ad